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한국생태학회 / v.33, no.2, 2010년, pp.175-186 
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( Changes in terpenes of three kinds of pine needles during litter decomposition ) |
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| 초 록 |
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| This study was designed to evaluate changes in the terpene composition of 3 types of pines (Pinus densiflora, Pinus thunbergii and Pinus rigida), while decomposing their leaf litter. Needle litters were placed at two different organic layer depths, one on the surface and the other beneath the litter layer. Changes in the terpene composition of this litter were detected using a gas chromatograph-mass spectrometer. Among the monoterpenes acquired from the fresh needles of P. densiflora and P. rigida, $alpha$-pinene (12.05% and 19.87%, respectively) was the major one, followed by $eta$-pinene (2.90% and 14.07%). However, from the needles of P. thunbergii, $eta$-pinene (20.77%) was the major one, followed by $alpha$-pinene (10.79%). Among the sesquiterpenes detected in P. densiflora, trans-caryophyllene (3.12%) was the highest composition compound, whereas germacrene-D (6.09%) for P. thunbergii and 1,6-cyclodecadiene (7.41%) and endo-1-bourbonanol (7.41%) for P. rigida were the highest content compounds. However, the total amounts of terpenes decreased sharply by 40-85.4% in all three types of pine needle after 90-120 days of the experiment. The concentration of each terpene differed during decomposition, and the majority of compounds disappeared from beneath the litter layer. It was determined that three types of reducing patterns of each compound appeared on the rate of loss of concentration during decomposition; one pattern decreasing sharply during the initial period, another pattern steadily or slowly decreasing, and a newly detected pattern at low concentration occurring during decomposition. |
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| 키워드 |
| decomposition;GC-MS;litter bag;monoterpene;sesquiterpene; |
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Journal of Ecology and Field Biology / v.33, no.2, 2010년, pp.175-186
한국생태학회
ISSN : 1975-020X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201016264960315)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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